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Finding the Fourth Proportional to 239,787.80, 330,915.18 and 130,898.60

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Solution

The fourth proportional to 239,787.80, 330,915.18 and 130,898.60 is: 180,644.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,787.80 : 330,915.18 = 130,898.60 : x
  2. Step 2: Convert to fraction form
    239,787.80/330,915.18 = 130,898.60/x
  3. Step 3: Cross multiply
    239,787.80x = 330,915.18 × 130,898.60
  4. Step 4: Simplify right side
    239,787.80x = 43,316,333,780.75
  5. Step 5: Solve for x
    x = 43,316,333,780.75/239,787.80
  6. Step 6: Final answer
    x = 180,644.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.